Abstract: The simulation of the passenger behavior on the tram is an important part of the research on the scene of the modern tram simulator and the simulation of the passenger information system.This paper used 3ds MAX modeling software to build three-dimensional virtual train model, three-dimensional model and basic action of Artificial Intelligence(AI) characters.Unity3D was used as application platform, and VC# 2017 was used as compiler to drive and control the three-dimensional model, so as to implement the simulation of AI characters.The behavior simulation of passengers on the tram can provide necessary scene support for the modern tram simulation system, and can be widely used in the training of train drivers.